$clr-primary: hsl(206, 33%, 37%)
$clr-secondary: hsl(253, 27%, 35%)
$clr-accent: hsl(45, 82%, 65%)

body  
  margin: 4rem 
  font:  
    size: 1.25rem 
    family: system-ui, sans-serif 
  text-align: center 
 
.btn  
  /* your code starts here */

  /* your code ends here */